block写法

/**
1.^标识后表示block返回数值类型，()表示回传参数
2.block都要用copy修饰，复制到堆上，防止释放
*/

pragma mark - blcok作为属性

/*<没有返回值,没有参数的block/
@property (nonatomic, copy) void(^myBlock1)(void);

/*<有返回值,没有参数的block/
@property (nonatomic, copy) int(^myBlock2)(void);
@property (nonatomic,strong) NSArray *(^Array)(void);

/*<没有返回值,有参数的block/
@property (nonatomic, copy) void(^myBlock3)(int);

/*<有返回值,有参数的block/
@property (nonatomic, copy) CGFloat (^myBlock4)(int, int);

+(void)showAlartViewType:(NSInteger )type WithcompletionHandler:(void(^)(void))sucess;

+(void)excuteInMainQueue:(void (^)(void))completionBlock;

+(void)excuteInMainQueue:(void (^)(void))completionBlock dely:(NSInteger )dely;

/*/
+(void)excuteInmainQueue:(NSString * (^) (NSInteger tag))completionHandle;